withdrawal diet

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The context: "Pork and Poultry producers use XXXX as
an important component of pathogen reduction programs, in vaccination-free windows and withdrawal diets, as well
as an aid in increasing feed intake."

The obvious translation would be "régime de sevrage" but I am afraid this will be confused with "weaning diet", which refers to the transition of a baby from its mother's milk to articifial feed and hence is not the same thing. Could it be "régime de suppression"?